<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
<script src="http://pv.sohu.com/cityjson?ie=utf-8"></script>  
    <script type="text/javascript">  
      alert(returnCitySN.cip);  
    </script>  
</body>
</html>